Ignition System: 1H-3
Ignition Timing Chart
The following chart is an example for ignition at 20° BTDC.
Ignition Timing Control Mode
•
When Cranking
The ignition timing is fixed at 5° BTDC until the engine starts.
•
When Idling / Trolling
The ignition timing is controlled within the range of 5° ± 2° BTDC to provide stable engine operation at the specified
idling / trolling speed.
•
When Running (Normal Operation)
The ignition timing ranges between 2° – 25° BTDC, depending on engine operating conditions.
Cm.: Compression, Ep.: Explosion, Ex.: Exhaust, In.: Intake,
CKP sensor
signal
CMP sensor
signal
No.1 Ignition
signal
No.3 Ignition
signal
No.2 Ignition
signal
No.1 cylinder
No.3 cylinder
No.2 cylinder
TDC
Cm.
E p.
Ex.
In.
Cm.
E p.
Ex.
In.
TDC
Cm.
In.
TDC
Ep.
Ex.
30 signals / crankshaft 1 rotation
CMP sensor - 9 signals / 720° (crankshaft 2 rotation)
Spark timing
IAJ611180003-01
Summary of Contents for GF60A
Page 1: ...9 9 5 0 0 8 8 L 0 0 0 1 E ...
Page 8: ...00 3 Precautions ...
Page 48: ...0B 22 Maintenance and Tune Up ...
Page 236: ...1K 9 Charging System ...
Page 292: ...2B 27 Power Trim and Tilt ...
Page 336: ...K10 ...